Physics: Electricity: Units
Muhtasari
Electricity calculations involve several quantities that look similar at first glance - current, charge, voltage, resistance, energy and power. Each has its own SI unit, and mixing them up is one of the fastest ways to lose marks in an exam.
This lesson lists the seven units the Edexcel specification requires for the Electricity section: ampere, coulomb, joule, ohm, second, volt and watt. You will learn what each one measures, how they connect through equations, and how to handle the metric prefixes that appear in real circuit problems.
Malengo
- Use the following units: ampere (A), coulomb (C), joule (J), ohm (Ohm), second (s), volt (V) and watt (W)
Maelezo ya Somo
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Tathmini ya Somo
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- The SI unit of electric charge is: A) Ampere B) Volt C) Coulomb D) Watt Answer: C
- Resistance is measured in: A) volts B) amperes C) ohms D) watts Answer: C
- One volt is equivalent to: A) one joule per second B) one joule per coulomb C) one coulomb per second D) one watt per ampere Answer: B
- How many milliamps are in 1.5 A? A) 0.015 mA B) 15 mA C) 150 mA D) 1500 mA Answer: D
- Which quantity is measured in watts? A) Energy B) Charge C) Power D) Resistance Answer: C
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Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
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